When we bought our place in 2012, it was rare to see another MTB in our village. Loads at Leogang/Saalbach up the road.
They built a flow trail in the village around 10 years ago and numbers started increasing, now there are loads every summer. Still only 6km of singletrack/flow trail in a 150km piste area though. Apparently they have something in planning maybe next year onwards, fingers crossed.
I know in Leogang there are around 30 land owners they have to deal with to keep the trails going, and as above, the main objections seem to be about hunting and liability insurance.
I know bookings on our apartment were down this Winter so I expect that was replicated throughout the hotels too. Hopefully the penny is starting to drop with regards to MTB development.